Abstract: Methods and systems for position determination are described for using an intrabody probe having a plurality of electrodes to generate a plurality of different electrical fields, and to also measure, using the plurality of electrodes, a measurement set (a Ve-e measurement set) comprising a plurality of measurements of the plurality of different electrical fields while the probe remains in one position. From the Ve-e measurement set, spatial position coordinates for the intrabody probe are estimated within an intrabody coordinate system, using an established mapping between previously observed Ve-e measurement sets and positions in the intrabody coordinate system. Systems and methods for generating and selecting such mappings are also described.

Abstract: A system for dynamic localization of medical instruments includes an ultrasound imaging system (110) configured to image a volume where one or more medical instruments are deployed. A registration module (136) registers two images of the one or more medical instruments to compute a transform between the two images, the two images being separated in time. A planning module (142) is configured to have positions of the volume and the one or more medical instruments updated based on the transform and, in turn, update a treatment plan in accordance with the updated positions such that changes in the volume and positions of the one or more medical instruments are accounted for in the updated plan.

Abstract: A method for providing real-time feedback and semantic-rich guidance on ultrasound image quality is performed by a processor in an ultrasound system. The method includes receiving an ultrasound image and classifying the ultrasound image into one or more categories based on image features. The classifying creates a classified image. The method also includes determining whether the classified image provides an acceptable representation of a target organ. In response to determining that the classified image does not provide an acceptable representation of the target organ, the method includes selecting operator guidance corresponding to the one or more category; presenting via a display and/or audible sound, the selected operator guidance; and receiving additional ultrasound images. The method further includes calculating a result based on the classified image in response to determining that the classified image provides an acceptable representation of the target organ.

Abstract: A wireless handheld ultrasound system an ultrasound front end to transmit ultrasonic waves into a subject and convert received ultrasonic echoes into digital data; an image processor coupled to the ultrasound front end to convert the digital data into an image; and a power section coupled to the ultrasound front end and the image processor. The power section may include a battery; a charging circuit to charge the battery; and a wireless power transducer coupled to the charging circuit to convert wireless power received from an external source into electrical energy for the charging circuit.

Abstract: An intravascular imaging device is provided. In one embodiment, the intravascular imaging device includes a flexible elongate member sized and shaped for insertion into a vessel of a patient, the flexible elongate member having a proximal portion and a distal portion; a conductor extending between the proximal and distal portions of the flexible elongate member; an imaging assembly disposed at the distal portion of the flexible elongate member, the imaging assembly including: a flex circuit including a body and a tab extending therefrom, the tab having a conductive portion coupled to the conductor; and a support member around which the flex circuit is disposed, the support member including a shelf on which tab is positioned.

Abstract: A grip-type electrocardiographic measuring device includes a main body portion that has a spheroid shape, a plate-shaped flange portion mounted on a side surface of the main body portion, a first electrocardiographic electrode disposed at a back surface side of the main body portion and making contact with one hand when the main body portion is gripped by the one hand, and a second electrocardiographic electrode disposed on a surface of the flange portion and making contact with a finger of the other hand when the flange portion is pinched by the other hand. The flange portion has flexibility and is bendable from a mounting portion on the main body portion.

Abstract: Apparatuses, systems, and techniques are provided for modular ultrasonic transducers and frame. An ultrasonic transducer array may include a modular ultrasonic transducer array frame. The modular ultrasonic transducer array frame may include mechanisms for the attachment of ultrasonic transducer modules to the ultrasonic transducer array frame. The ultrasonic transducer array may include ultrasonic transducer modules which may include arrays of ultrasonic transducer elements within the ultrasonic transducer modules. Two of the ultrasonic transducer modules may include arrays of ultrasonic transducer elements where the ultrasonic transducer elements are different between the two ultrasonic transducer modules.

Abstract: An aspect of the disclosure pertains to a wrist-worn device that may be characterized by the following features: an external surface that is not in contact with the user when the wrist-worn device is worn; a force sensor; a PPG sensor disposed on the wrist-worn device; and control logic configured to: (i) generate one or more sensor data samples, each sensor data sample including data that links force data generated by the force sensor when a user presses a against the external surface at a given time with heart rate data obtained from the PPG sensor at the given time; and (ii) calculate an estimate of blood pressure from the one or more sensor data samples. As examples, the force sensor may be a force sensitive touch screen or film, a strain gauge integrating into the device, or a calibrated spring element configured to be pressed by the user.

Abstract: A guide framework for positioning an ultrasonic transducer which emits a focused ultrasound to a target point in carrying out surgery to apply ultrasonic stimulation to a subject's brain, includes a body in a shape of a mask that is laid on the subject's face, and a positioning hole formed through an inner surface and an outer surface of the mask body, the positioning hole into which the ultrasonic transducer is inserted, wherein the inner surface of the mask body is formed to conform a facial contour of the subject, and when the guide framework is laid on the subject's face and the ultrasonic transducer is disposed at the positioning hole, the position of the target point is naturally disposed at a preset stimulation site of the brain. An ultrasonic stimulation device includes an ultrasonic transducer and the guide framework for positioning the ultrasonic transducer.

Abstract: A hybrid elastography method includes application of a continuous low frequency vibration and generation, using an ultrasonic transducer in contact with the viscoelastic medium, of a first series of ultrasonic acquisitions, the first series of ultrasonic acquisitions including groups of ultrasonic acquisitions, the groups of ultrasonic acquisitions being generated with a first repetition rate, each group of ultrasonic acquisitions including at least one acquisition, the continuous vibration generating an elastic wave within the viscoelastic medium; application of a low frequency pulse and generation, using the ultrasonic transducer, of a second series of ultrasonic acquisitions, the ultrasonic acquisitions composing the second series being generated with a second repetition rate, the low frequency pulse generating a transient shear wave propagating within the viscoelastic medium; the continuous vibration applied by the first vibrator being stopped before the application of the low frequency pulse.

Abstract: Described are ultrasound transducer modules and handheld ultrasound imagers including thermal and acoustic management features to produce high quality ultrasound images in a portable, handheld form factor.

Abstract: An apparatus for determining the arterial structure of the hand of a subject, the apparatus comprising a wrist pulse measurement device configured to measure wrist pulse signals at the wrist of the subject, a digit pulse measurement device configured to measure digit pulse signals at the digits of the hand, the apparatus being configured to compare the arrival time of one or more waveform features in a wrist pulse signal and the arrival time of the corresponding feature in two or more digit pulse signals in order to determine a pulse transit time for each of the one or more waveform features, thereby estimating the arterial structure of the hand.

Abstract: An imaging catheter assembly is provided. The imaging catheter assembly includes an interposer including a multi-layered substrate structure, wherein the multi-layered substrate structure includes a first plurality of conductive contact pads coupled to a second plurality of conductive contact pads via a plurality of conductive lines; an imaging component coupled to the interposer via the first plurality of conductive contact pads; and an electrical cable coupled to the interposer via the second plurality of conductive contact pads and in communication with the imaging component.

Abstract: An ultrasound imaging apparatus according to an embodiment comprises an ultrasonic probe to acquire an ultrasonic signal of a target object, a display, and a controller to acquire viscoelasticity data of the target object based on the acquired ultrasonic signal, determine at least one parameter for displaying the acquired viscoelasticity data, determine a parameter space for displaying the at least one parameter, and control the display to display the determined parameter in the determined parameter space.

Abstract: An implantable ultrasound generating treating device (12) to induce spinal cord or spinal nerves treatment, suitable for implantation in the spinal canal and comprises an elongate support member (22, 32) and an array of several treatment transducers (20) distributed along the elongate support member. The several treatment transducers (20) comprise radial transducers emitting an ultrasound treatment beam oriented radially, wherein the treatment transducers (20) have a resonant frequency comprised between 0.5 and 4 MHz. The device has articulating portions so that the implantable device can adapt its shape to a curved elongation path. Also disclosed is an apparatus including the implantable ultrasound generating treating device and methods comprising inserting the implantable ultrasound generating treating device (12) inside the spinal canal of the spine of the patient.

Abstract: Methods and systems are provided for turbulence monitoring during ultrasound scanning. In one example, during scanning with an ultrasound probe, a turbulence amount between two successive frames may be monitored, and in response to the turbulence amount at or above the higher threshold, deployment of the one or more image interpretation protocols may be stopped or delayed until the turbulence amount decreases below the higher threshold.

Abstract: Methods and systems are provided for improving image quality with three-dimensional (3D) scout scans for computed tomography (CT) imaging. In one embodiment, a method comprises reconstructing an image from projection data acquired during a diagnostic scan of a patient with corrections based on scout projection data acquired during a 3D scout scan of the patient. In this way, the image quality of a diagnostic image can be improved by using 3D scout data to correct projection data or image data.

Abstract: A bio-information measuring apparatus includes: a pulse wave measurer configured to measure a plurality of pulse wave signals from an object; a contact pressure measurer configured to measure contact a pressure between the object and the pulse wave measurer; and a processor configured to obtain a plurality of first envelopes based on the contact pressure and the plurality of pulse wave signals, obtain a second envelope by combining the plurality of first envelopes, and measure bio-information based on the second envelope.

Abstract: The application describes an adjustable arm for a patient monitoring device to be placed on a surface portion of a patient's body, said arm comprising: at least first and second arm parts; abase to which the first arm part is connected and which includes mounting means for mounting it relative to a patient support platform; and holding means for receiving the patient monitoring device, to which the second arm part is connected; the arm parts, the base and the holding means being articulated by means of joints therebetween, which joints are fixable against movement when the patient monitoring device is in use; wherein the joints between the first arm part and the base and between second arm part and the holding means comprise multidirectional joints; wherein the base has a fixed portion and a tillable portion, the fixed portion comprising the mounting means and the first arm part being connected to the tillable portion, whereby when the said joints are fixed the adjustable arm can maintain the patient monitori

Abstract: Dual sensor system for continuous blood pressure monitoring during transcatheter heart valve therapies (TVT), such as transcatheter aortic valve replacement (TAVR) or transcatheter mitral valve replacement (TMVR), comprises a controller, a support guidewire for TVT containing a first Fabry-Pérot (FP) optical pressure sensor near its distal end, and a pigtail catheter for delivery of contrast medium containing a second FP optical pressure sensor near its distal end. For example, for TAVR, the support guidewire is positioned to place the first optical pressure sensor within the left ventricle (LV) for monitoring LV pressure, the pigtail catheter is positioned in the aorta to place the second optical pressure sensor in the ascending aorta for direct measurement of pressure in the aorta, downstream of the aortic valve, enabling continuous monitoring of blood pressure at both sensor locations during TAVR. The controller may be configured to interface with standard patient monitoring systems.